Malicious Office (OLE) / .PPT — malware analysis report

Static analysis result for SHA-256 7c33aeb8fc1276e4…

MALICIOUS

Office (OLE) / .PPT

54.5 KB Created: 2023-02-28 19:31:09 Authoring application: Microsoft Office PowerPoint
MD5: d06eeb6d5ecc778305da6f7ac59c745c SHA-1: 4a2eab71394764115bdd814a57d3af50a0dad16e SHA-256: 7c33aeb8fc1276e42d9c7580d8aa5c7082375eb3ab60e54e067ded8a92f8fd4b
420 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1218.011 Signed Binary Proxy Execution: Rundll32 T1059.005 Visual Basic

This Office document contains VBA macros with an Auto_Open procedure that leverages WScript.Shell and cmd.exe to execute a payload. The script is designed to download and execute a second-stage payload from the embedded URL http://191.101.2.39/installazione.exe. The use of Shell() and CreateObject() calls, along with references to WScript.Shell and cmd.exe, strongly indicates malicious intent.

Heuristics 11

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://191.101.2.39/installazione.exe

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
35409f0b623ecbda95dd47ab9017ad0993de912b262b4c423a141f9269eefe1d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 251 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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